Google Web Security for Enterprise Administration Guide - Manual (Page 40)

Web Filtering 43
6. Once you are happy with the Alert Page modifications you have made, click
the “Save” button located at the bottom of the screen.
7. Click the preview button just beneath the text area to see how the additional
information is rendered. You must save your changes before preview displays
your new settings.
Using Variables to Customize Block Page Text
You may insert #reason, #url, #category or #username into the HTML in your
custom block page and the block page will show the reason for the block event.
An example below shows this more clearly:
Default block message:
Custom HTML message written by user:
Custom message text will appear in end-user block page:
Filtering Email Alerts
The Filtering Email Alerts are emails that notify you of when the web security
service has blocked a web page. The email will contain the following information:
• The IP address that the request left your organization on.
• The Internal IP address and or the user/group
• The reason the requested page was blocked
• The full URL of the requested page